Context
2.0M tokens (~1,000 books)
Input $/1M
$0.20
Output $/1M
$0.50
Type
multimodal
License
Proprietary
Benchmarks
3 tested
Data updated today
About
Grok 4.1 Fast is xAI's best agentic tool calling model that shines in real-world use cases like customer support and deep research. 2M context window. Reasoning can be enabled/disabled using...
Tested on 3 benchmarks with 0.0% average. Top scores: Artificial Analysis — Agentic Index (49.3%), Artificial Analysis — Quality Index (38.6%), Artificial Analysis — Coding Index (30.9%).
Capabilities
speed
66.0
#27 globally
Benchmark Scores
Compare AllTested on 3 benchmarks · Ranked across 1 categories
Score Distribution (all 233 models)
0255075100
speedCompare speed →
Artificial Analysis — Agentic Index
49.3—Artificial Analysis Agentic Index. Composite score measuring agent capability across tool use and planning tasks.
Artificial Analysis — Quality Index
38.6—Artificial Analysis Quality Index. Composite quality score combining multiple benchmark results into a single metric.
Artificial Analysis — Coding Index
30.9—Artificial Analysis Coding Index. Composite coding quality score from multiple code benchmarks.
Excellent (85+) Good (70-85) Average (50-70) Below (<50)
Links
Research
Documentation
Community
BenchGecko API
grok-4-1-fast
Specifications
- Typemultimodal
- Context2.0M tokens (~1,000 books)
- ReleasedNov 2025
- LicenseProprietary
- StatusActive
- Cost / Message~$0.001
Available On
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Frequently Asked Questions
Grok 4.1 Fast is a proprietary multimodal AI model by xAI, released in November 2025. Context window: 2M tokens.